Facebook Page
Twitter
RSS
+ Reply to Thread
Results 1 to 3 of 3
  1. MHB Apprentice

    Status
    Offline
    Join Date
    Jul 2015
    Posts
    4
    Thanks
    0 times
    Thanked
    0 times
    #1
    Hello, I've just finished two optimization problems for my calculus class. I would really appreciate it if someone could check my work for me.


  2. # ADS
    Circuit advertisement
    Join Date
    Always
    Posts
    Many
     

  3. Indicium Physicus
    MHB Math Scholar
    MHB Ambassador

    Status
    Online
    Join Date
    Jan 2012
    Location
    Rochester, MN
    Posts
    4,069
    Thanks
    11,871 times
    Thanked
    10,052 times
    Thank/Post
    2.470
    Trophies
    1 Highscore
    Awards
    MHB Chat Room Award (2017)  

MHB Math Notes Award (2016)  

MHB Math Notes Award (2015)
    #2
    I haven't checked every step, but the setup and overall methodology looks fine to me. Hint on Number 2: maximize $d^2$. Then you don't have to bother with square roots.

  4. Perseverance
    MHB Global Moderator
    MHB Math Helper
    Greg's Avatar
    Status
    Offline
    Join Date
    Feb 2013
    Location
    London Ontario, Canada - The Forest City
    Posts
    1,379
    Thanks
    6,420 times
    Thanked
    2,746 times
    Thank/Post
    1.991
    #3
    2.

    $ \displaystyle -\dfrac{1}{2x}x+3=x^2-1\Rightarrow x=\pm\sqrt\frac72$

Similar Threads

  1. Need extra calculus practice? Check out my worksheets!
    By Chris L T521 in forum Calculus
    Replies: 2
    Last Post: July 25th, 2019, 18:24
  2. Constraint optimization without using Calculus
    By dwsmith in forum Geometry
    Replies: 2
    Last Post: May 3rd, 2014, 23:20
  3. Calculus Optimization Problem
    By drasord in forum Calculus
    Replies: 6
    Last Post: December 3rd, 2013, 22:39
  4. Calculus Equation Check
    By Kris in forum Calculus
    Replies: 5
    Last Post: September 10th, 2013, 23:46
  5. Optimization Problems
    By dexstarr in forum Calculus
    Replies: 6
    Last Post: July 29th, 2013, 23:47

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Math Help Boards